Tests for Tau's Charged-Current Structure

Details Tests for Tau's Charged-Current Structure Tests for Tau's Charged-Current Structure

1995-08-24

arxiv.org/abs/hep-ph/9508366v1

Phys. Lett. B355 (1995) 561

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contributed paper to LP95, Beijing. Revision of SUNY BING [10/1/94] which will appear in Phys. Let. [ tau ---> pi nu channel a

Scientific paper

10.1016/0370-2693(95)00779-K

The Lorentz structure of the tau lepton's charged-current can almost be completely determined by use of stage-two spin-correlation functions for the $\{\rho ^{-},\rho ^{+}\}$and $\{a_1^{-},a_1^{+}\}$ decay modes. It is possible to test for a ``$(V-A)$ $ + $ something'' structure in the ${J^{Charged}}_{Lepton}$ current, so as to bound the scales $\Lambda$ for ``new physics" such as arising from tau weak magnetism, weak electricity, and/or 2nd-class currents. In practice, only limited information can be obtained from the $\tau \rightarrow \pi \nu$ modes.

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